box with lid for aqua pump

// if you want to use it to aqua pump air
//drill many holes in the lid
//
//
//
//////////box//////////////////
difference(){
cube([100,20,10]);
translate ([3,3,2])
cube([94,14,8.1]);
translate ([2,2,8])
cube([96,16,8.1]);
}
/////////////////////

///////////Lid//////////
difference()
{
union()
{
translate ([0,40,0])
cube([96,16,2]);
translate ([10,48,0])
cylinder(7,3,3,$fn=30);
translate([85,48,0])
cylinder(7,3,3,$fn=30);
}

union()
{
translate ([10,48,-1])
cylinder(12,2,2,$fn=30);
translate ([85,48,-1])
cylinder(12,2,2,$fn=30);
}
}